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- /*
- * tkGrid.c --
- *
- * Grid based geometry manager.
- *
- * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * SCCS: @(#) tkGrid.c 1.38 97/06/25 19:34:25
- */
-
- #include "tkInt.h"
-
- /*
- * Convenience Macros
- */
-
- #ifdef MAX
- # undef MAX
- #endif
- #define MAX(x,y) ((x) > (y) ? (x) : (y))
- #ifdef MIN
- # undef MIN
- #endif
- #define MIN(x,y) ((x) > (y) ? (y) : (x))
-
- #define COLUMN (1) /* working on column offsets */
- #define ROW (2) /* working on row offsets */
-
- #define CHECK_ONLY (1) /* check max slot constraint */
- #define CHECK_SPACE (2) /* alloc more space, don't change max */
-
- /*
- * Pre-allocate enough row and column slots for "typical" sized tables
- * this value should be chosen so by the time the extra malloc's are
- * required, the layout calculations overwehlm them. [A "slot" contains
- * information for either a row or column, depending upon the context.]
- */
-
- #define TYPICAL_SIZE 25 /* (arbitrary guess) */
- #define PREALLOC 10 /* extra slots to allocate */
-
- /*
- * Data structures are allocated dynamically to support arbitrary sized tables.
- * However, the space is proportional to the highest numbered slot with
- * some non-default property. This limit is used to head off mistakes and
- * denial of service attacks by limiting the amount of storage required.
- */
-
- #define MAX_ELEMENT 10000
-
- /*
- * Special characters to support relative layouts.
- */
-
- #define REL_SKIP 'x' /* Skip this column. */
- #define REL_HORIZ '-' /* Extend previous widget horizontally. */
- #define REL_VERT '^' /* Extend widget from row above. */
-
- /*
- * Structure to hold information for grid masters. A slot is either
- * a row or column.
- */
-
- typedef struct SlotInfo {
- int minSize; /* The minimum size of this slot (in pixels).
- * It is set via the rowconfigure or
- * columnconfigure commands. */
- int weight; /* The resize weight of this slot. (0) means
- * this slot doesn't resize. Extra space in
- * the layout is given distributed among slots
- * inproportion to their weights. */
- int pad; /* Extra padding, in pixels, required for
- * this slot. This amount is "added" to the
- * largest slave in the slot. */
- int offset; /* This is a cached value used for
- * introspection. It is the pixel
- * offset of the right or bottom edge
- * of this slot from the beginning of the
- * layout. */
- int temp; /* This is a temporary value used for
- * calculating adjusted weights when
- * shrinking the layout below its
- * nominal size. */
- } SlotInfo;
-
- /*
- * Structure to hold information during layout calculations. There
- * is one of these for each slot, an array for each of the rows or columns.
- */
-
- typedef struct GridLayout {
- struct Gridder *binNextPtr; /* The next slave window in this bin.
- * Each bin contains a list of all
- * slaves whose spans are >1 and whose
- * right edges fall in this slot. */
- int minSize; /* Minimum size needed for this slot,
- * in pixels. This is the space required
- * to hold any slaves contained entirely
- * in this slot, adjusted for any slot
- * constrants, such as size or padding. */
- int pad; /* Padding needed for this slot */
- int weight; /* Slot weight, controls resizing. */
- int minOffset; /* The minimum offset, in pixels, from
- * the beginning of the layout to the
- * right/bottom edge of the slot calculated
- * from top/left to bottom/right. */
- int maxOffset; /* The maximum offset, in pixels, from
- * the beginning of the layout to the
- * right-or-bottom edge of the slot calculated
- * from bottom-or-right to top-or-left. */
- } GridLayout;
-
- /*
- * Keep one of these for each geometry master.
- */
-
- typedef struct {
- SlotInfo *columnPtr; /* Pointer to array of column constraints. */
- SlotInfo *rowPtr; /* Pointer to array of row constraints. */
- int columnEnd; /* The last column occupied by any slave. */
- int columnMax; /* The number of columns with constraints. */
- int columnSpace; /* The number of slots currently allocated for
- * column constraints. */
- int rowEnd; /* The last row occupied by any slave. */
- int rowMax; /* The number of rows with constraints. */
- int rowSpace; /* The number of slots currently allocated
- * for row constraints. */
- int startX; /* Pixel offset of this layout within its
- * parent. */
- int startY; /* Pixel offset of this layout within its
- * parent. */
- } GridMaster;
-
- /*
- * For each window that the grid cares about (either because
- * the window is managed by the grid or because the window
- * has slaves that are managed by the grid), there is a
- * structure of the following type:
- */
-
- typedef struct Gridder {
- Tk_Window tkwin; /* Tk token for window. NULL means that
- * the window has been deleted, but the
- * gridder hasn't had a chance to clean up
- * yet because the structure is still in
- * use. */
- struct Gridder *masterPtr; /* Master window within which this window
- * is managed (NULL means this window
- * isn't managed by the gridder). */
- struct Gridder *nextPtr; /* Next window managed within same
- * parent. List order doesn't matter. */
- struct Gridder *slavePtr; /* First in list of slaves managed
- * inside this window (NULL means
- * no grid slaves). */
- GridMaster *masterDataPtr; /* Additional data for geometry master. */
- int column, row; /* Location in the grid (starting
- * from zero). */
- int numCols, numRows; /* Number of columns or rows this slave spans.
- * Should be at least 1. */
- int padX, padY; /* Total additional pixels to leave around the
- * window (half of this space is left on each
- * side). This is space *outside* the window:
- * we'll allocate extra space in frame but
- * won't enlarge window). */
- int iPadX, iPadY; /* Total extra pixels to allocate inside the
- * window (half this amount will appear on
- * each side). */
- int sticky; /* which sides of its cavity this window
- * sticks to. See below for definitions */
- int doubleBw; /* Twice the window's last known border
- * width. If this changes, the window
- * must be re-arranged within its parent. */
- int *abortPtr; /* If non-NULL, it means that there is a nested
- * call to ArrangeGrid already working on
- * this window. *abortPtr may be set to 1 to
- * abort that nested call. This happens, for
- * example, if tkwin or any of its slaves
- * is deleted. */
- int flags; /* Miscellaneous flags; see below
- * for definitions. */
-
- /*
- * These fields are used temporarily for layout calculations only.
- */
-
- struct Gridder *binNextPtr; /* Link to next span>1 slave in this bin. */
- int size; /* Nominal size (width or height) in pixels
- * of the slave. This includes the padding. */
- } Gridder;
-
- /* Flag values for "sticky"ness The 16 combinations subsume the packer's
- * notion of anchor and fill.
- *
- * STICK_NORTH This window sticks to the top of its cavity.
- * STICK_EAST This window sticks to the right edge of its cavity.
- * STICK_SOUTH This window sticks to the bottom of its cavity.
- * STICK_WEST This window sticks to the left edge of its cavity.
- */
-
- #define STICK_NORTH 1
- #define STICK_EAST 2
- #define STICK_SOUTH 4
- #define STICK_WEST 8
-
- /*
- * Flag values for Grid structures:
- *
- * REQUESTED_RELAYOUT: 1 means a Tcl_DoWhenIdle request
- * has already been made to re-arrange
- * all the slaves of this window.
- *
- * DONT_PROPAGATE: 1 means don't set this window's requested
- * size. 0 means if this window is a master
- * then Tk will set its requested size to fit
- * the needs of its slaves.
- */
-
- #define REQUESTED_RELAYOUT 1
- #define DONT_PROPAGATE 2
-
- /*
- * Hash table used to map from Tk_Window tokens to corresponding
- * Grid structures:
- */
-
- static Tcl_HashTable gridHashTable;
- static int initialized = 0;
-
- /*
- * Prototypes for procedures used only in this file:
- */
-
- static void AdjustForSticky _ANSI_ARGS_((Gridder *slavePtr, int *xPtr,
- int *yPtr, int *widthPtr, int *heightPtr));
- static int AdjustOffsets _ANSI_ARGS_((int width,
- int elements, SlotInfo *slotPtr));
- static void ArrangeGrid _ANSI_ARGS_((ClientData clientData));
- static int CheckSlotData _ANSI_ARGS_((Gridder *masterPtr, int slot,
- int slotType, int checkOnly));
- static int ConfigureSlaves _ANSI_ARGS_((Tcl_Interp *interp,
- Tk_Window tkwin, int argc, char *argv[]));
- static void DestroyGrid _ANSI_ARGS_((char *memPtr));
- static Gridder *GetGrid _ANSI_ARGS_((Tk_Window tkwin));
- static void GridStructureProc _ANSI_ARGS_((
- ClientData clientData, XEvent *eventPtr));
- static void GridLostSlaveProc _ANSI_ARGS_((ClientData clientData,
- Tk_Window tkwin));
- static void GridReqProc _ANSI_ARGS_((ClientData clientData,
- Tk_Window tkwin));
- static void InitMasterData _ANSI_ARGS_((Gridder *masterPtr));
- static int ResolveConstraints _ANSI_ARGS_((Gridder *gridPtr,
- int rowOrColumn, int maxOffset));
- static void SetGridSize _ANSI_ARGS_((Gridder *gridPtr));
- static void StickyToString _ANSI_ARGS_((int flags, char *result));
- static int StringToSticky _ANSI_ARGS_((char *string));
- static void Unlink _ANSI_ARGS_((Gridder *gridPtr));
-
- static Tk_GeomMgr gridMgrType = {
- "grid", /* name */
- GridReqProc, /* requestProc */
- GridLostSlaveProc, /* lostSlaveProc */
- };
-
- /*
- *--------------------------------------------------------------
- *
- * Tk_GridCmd --
- *
- * This procedure is invoked to process the "grid" Tcl command.
- * See the user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
-
- int
- Tk_GridCmd(clientData, interp, argc, argv)
- ClientData clientData; /* Main window associated with
- * interpreter. */
- Tcl_Interp *interp; /* Current interpreter. */
- int argc; /* Number of arguments. */
- char **argv; /* Argument strings. */
- {
- Tk_Window tkwin = (Tk_Window) clientData;
- Gridder *masterPtr; /* master grid record */
- GridMaster *gridPtr; /* pointer to grid data */
- size_t length; /* streing length of argument */
- char c; /* 1st character of argument */
-
- if ((argc >= 2) && ((argv[1][0] == '.') || (argv[1][0] == REL_SKIP) ||
- (argv[1][0] == REL_VERT))) {
- return ConfigureSlaves(interp, tkwin, argc-1, argv+1);
- }
- if (argc < 3) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " option arg ?arg ...?\"", (char *) NULL);
- return TCL_ERROR;
- }
- c = argv[1][0];
- length = strlen(argv[1]);
-
- if ((c == 'b') && (strncmp(argv[1], "bbox", length) == 0)) {
- Tk_Window master;
- int row, column; /* origin for bounding box */
- int row2, column2; /* end of bounding box */
- int endX, endY; /* last column/row in the layout */
- int x=0, y=0; /* starting pixels for this bounding box */
- int width, height; /* size of the bounding box */
-
- if (argc!=3 && argc != 5 && argc != 7) {
- Tcl_AppendResult(interp, "wrong number of arguments: ",
- "must be \"",argv[0],
- " bbox master ?column row ?column row??\"",
- (char *) NULL);
- return TCL_ERROR;
- }
-
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
- masterPtr = GetGrid(master);
-
- if (argc >= 5) {
- if (Tcl_GetInt(interp, argv[3], &column) != TCL_OK) {
- return TCL_ERROR;
- }
- if (Tcl_GetInt(interp, argv[4], &row) != TCL_OK) {
- return TCL_ERROR;
- }
- column2 = column;
- row2 = row;
- }
-
- if (argc == 7) {
- if (Tcl_GetInt(interp, argv[5], &column2) != TCL_OK) {
- return TCL_ERROR;
- }
- if (Tcl_GetInt(interp, argv[6], &row2) != TCL_OK) {
- return TCL_ERROR;
- }
- }
-
- gridPtr = masterPtr->masterDataPtr;
- if (gridPtr == NULL) {
- sprintf(interp->result, "%d %d %d %d",0,0,0,0);
- return(TCL_OK);
- }
-
- SetGridSize(masterPtr);
- endX = MAX(gridPtr->columnEnd, gridPtr->columnMax);
- endY = MAX(gridPtr->rowEnd, gridPtr->rowMax);
-
- if ((endX == 0) || (endY == 0)) {
- sprintf(interp->result, "%d %d %d %d",0,0,0,0);
- return(TCL_OK);
- }
- if (argc == 3) {
- row = column = 0;
- row2 = endY;
- column2 = endX;
- }
-
- if (column > column2) {
- int temp = column;
- column = column2, column2 = temp;
- }
- if (row > row2) {
- int temp = row;
- row = row2, row2 = temp;
- }
-
- if (column > 0 && column < endX) {
- x = gridPtr->columnPtr[column-1].offset;
- } else if (column > 0) {
- x = gridPtr->columnPtr[endX-1].offset;
- }
-
- if (row > 0 && row < endY) {
- y = gridPtr->rowPtr[row-1].offset;
- } else if (row > 0) {
- y = gridPtr->rowPtr[endY-1].offset;
- }
-
- if (column2 < 0) {
- width = 0;
- } else if (column2 >= endX) {
- width = gridPtr->columnPtr[endX-1].offset - x;
- } else {
- width = gridPtr->columnPtr[column2].offset - x;
- }
-
- if (row2 < 0) {
- height = 0;
- } else if (row2 >= endY) {
- height = gridPtr->rowPtr[endY-1].offset - y;
- } else {
- height = gridPtr->rowPtr[row2].offset - y;
- }
-
- sprintf(interp->result, "%d %d %d %d",
- x + gridPtr->startX, y + gridPtr->startY, width, height);
- } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)) {
- if (argv[2][0] != '.') {
- Tcl_AppendResult(interp, "bad argument \"", argv[2],
- "\": must be name of window", (char *) NULL);
- return TCL_ERROR;
- }
- return ConfigureSlaves(interp, tkwin, argc-2, argv+2);
- } else if (((c == 'f') && (strncmp(argv[1], "forget", length) == 0)) ||
- ((c == 'r') && (strncmp(argv[1], "remove", length) == 0))) {
- Tk_Window slave;
- Gridder *slavePtr;
- int i;
-
- for (i = 2; i < argc; i++) {
- slave = Tk_NameToWindow(interp, argv[i], tkwin);
- if (slave == NULL) {
- return TCL_ERROR;
- }
- slavePtr = GetGrid(slave);
- if (slavePtr->masterPtr != NULL) {
-
- /*
- * For "forget", reset all the settings to their defaults
- */
-
- if (c == 'f') {
- slavePtr->column = slavePtr->row = -1;
- slavePtr->numCols = 1;
- slavePtr->numRows = 1;
- slavePtr->padX = slavePtr->padY = 0;
- slavePtr->iPadX = slavePtr->iPadY = 0;
- slavePtr->doubleBw = 2*Tk_Changes(tkwin)->border_width;
- slavePtr->flags = 0;
- slavePtr->sticky = 0;
- }
- Tk_ManageGeometry(slave, (Tk_GeomMgr *) NULL,
- (ClientData) NULL);
- Unlink(slavePtr);
- Tk_UnmapWindow(slavePtr->tkwin);
- }
- }
- } else if ((c == 'i') && (strncmp(argv[1], "info", length) == 0)) {
- register Gridder *slavePtr;
- Tk_Window slave;
- char buffer[70];
-
- if (argc != 3) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " info window\"", (char *) NULL);
- return TCL_ERROR;
- }
- slave = Tk_NameToWindow(interp, argv[2], tkwin);
- if (slave == NULL) {
- return TCL_ERROR;
- }
- slavePtr = GetGrid(slave);
- if (slavePtr->masterPtr == NULL) {
- interp->result[0] = '\0';
- return TCL_OK;
- }
-
- Tcl_AppendElement(interp, "-in");
- Tcl_AppendElement(interp, Tk_PathName(slavePtr->masterPtr->tkwin));
- sprintf(buffer, " -column %d -row %d -columnspan %d -rowspan %d",
- slavePtr->column, slavePtr->row,
- slavePtr->numCols, slavePtr->numRows);
- Tcl_AppendResult(interp, buffer, (char *) NULL);
- sprintf(buffer, " -ipadx %d -ipady %d -padx %d -pady %d",
- slavePtr->iPadX/2, slavePtr->iPadY/2, slavePtr->padX/2,
- slavePtr->padY/2);
- Tcl_AppendResult(interp, buffer, (char *) NULL);
- StickyToString(slavePtr->sticky,buffer);
- Tcl_AppendResult(interp, " -sticky ", buffer, (char *) NULL);
- } else if((c == 'l') && (strncmp(argv[1], "location", length) == 0)) {
- Tk_Window master;
- register SlotInfo *slotPtr;
- int x, y; /* Offset in pixels, from edge of parent. */
- int i, j; /* Corresponding column and row indeces. */
- int endX, endY; /* end of grid */
-
- if (argc != 5) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " location master x y\"", (char *)NULL);
- return TCL_ERROR;
- }
-
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
-
- if (Tk_GetPixels(interp, master, argv[3], &x) != TCL_OK) {
- return TCL_ERROR;
- }
- if (Tk_GetPixels(interp, master, argv[4], &y) != TCL_OK) {
- return TCL_ERROR;
- }
-
- masterPtr = GetGrid(master);
- if (masterPtr->masterDataPtr == NULL) {
- sprintf(interp->result, "%d %d", -1, -1);
- return TCL_OK;
- }
- gridPtr = masterPtr->masterDataPtr;
-
- /*
- * Update any pending requests. This is not always the
- * steady state value, as more configure events could be in
- * the pipeline, but its as close as its easy to get.
- */
-
- while (masterPtr->flags & REQUESTED_RELAYOUT) {
- Tk_CancelIdleCall(ArrangeGrid, (ClientData) masterPtr);
- ArrangeGrid ((ClientData) masterPtr);
- }
- SetGridSize(masterPtr);
- endX = MAX(gridPtr->columnEnd, gridPtr->columnMax);
- endY = MAX(gridPtr->rowEnd, gridPtr->rowMax);
-
- slotPtr = masterPtr->masterDataPtr->columnPtr;
- if (x < masterPtr->masterDataPtr->startX) {
- i = -1;
- } else {
- x -= masterPtr->masterDataPtr->startX;
- for (i=0;slotPtr[i].offset < x && i < endX; i++) {
- /* null body */
- }
- }
-
- slotPtr = masterPtr->masterDataPtr->rowPtr;
- if (y < masterPtr->masterDataPtr->startY) {
- j = -1;
- } else {
- y -= masterPtr->masterDataPtr->startY;
- for (j=0;slotPtr[j].offset < y && j < endY; j++) {
- /* null body */
- }
- }
-
- sprintf(interp->result, "%d %d", i, j);
- } else if ((c == 'p') && (strncmp(argv[1], "propagate", length) == 0)) {
- Tk_Window master;
- int propagate;
-
- if (argc > 4) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " propagate window ?boolean?\"",
- (char *) NULL);
- return TCL_ERROR;
- }
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
- masterPtr = GetGrid(master);
- if (argc == 3) {
- interp->result = (masterPtr->flags & DONT_PROPAGATE) ? "0" : "1";
- return TCL_OK;
- }
- if (Tcl_GetBoolean(interp, argv[3], &propagate) != TCL_OK) {
- return TCL_ERROR;
- }
- if ((!propagate) ^ (masterPtr->flags&DONT_PROPAGATE)) {
- masterPtr->flags ^= DONT_PROPAGATE;
-
- /*
- * Re-arrange the master to allow new geometry information to
- * propagate upwards to the master's master.
- */
-
- if (masterPtr->abortPtr != NULL) {
- *masterPtr->abortPtr = 1;
- }
- if (!(masterPtr->flags & REQUESTED_RELAYOUT)) {
- masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) masterPtr);
- }
- }
- } else if ((c == 's') && (strncmp(argv[1], "size", length) == 0)
- && (length > 1)) {
- Tk_Window master;
-
- if (argc != 3) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " size window\"", (char *) NULL);
- return TCL_ERROR;
- }
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
- masterPtr = GetGrid(master);
-
- if (masterPtr->masterDataPtr != NULL) {
- SetGridSize(masterPtr);
- gridPtr = masterPtr->masterDataPtr;
- sprintf(interp->result, "%d %d",
- MAX(gridPtr->columnEnd, gridPtr->columnMax),
- MAX(gridPtr->rowEnd, gridPtr->rowMax));
- } else {
- sprintf(interp->result, "%d %d",0, 0);
- }
- } else if ((c == 's') && (strncmp(argv[1], "slaves", length) == 0)
- && (length > 1)) {
- Tk_Window master;
- Gridder *slavePtr;
- int i, value;
- int row = -1, column = -1;
-
- if ((argc < 3) || ((argc%2) == 0)) {
- Tcl_AppendResult(interp, "wrong # args: should be \"",
- argv[0], " slaves window ?-option value...?\"",
- (char *) NULL);
- return TCL_ERROR;
- }
-
- for (i=3; i<argc; i+=2) {
- length = strlen(argv[i]);
- if ((*argv[i] != '-') || (length < 2)) {
- Tcl_AppendResult(interp, "invalid args: should be \"",
- argv[0], " slaves window ?-option value...?\"",
- (char *) NULL);
- return TCL_ERROR;
- }
- if (Tcl_GetInt(interp, argv[i+1], &value) != TCL_OK) {
- return TCL_ERROR;
- }
- if (value < 0) {
- Tcl_AppendResult(interp, argv[i],
- " is an invalid value: should NOT be < 0",
- (char *) NULL);
- return TCL_ERROR;
- }
- if (strncmp(argv[i], "-column", length) == 0) {
- column = value;
- } else if (strncmp(argv[i], "-row", length) == 0) {
- row = value;
- } else {
- Tcl_AppendResult(interp, argv[i],
- " is an invalid option: should be \"",
- "-row, -column\"",
- (char *) NULL);
- return TCL_ERROR;
- }
- }
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
- masterPtr = GetGrid(master);
-
- for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
- slavePtr = slavePtr->nextPtr) {
- if (column>=0 && (slavePtr->column > column
- || slavePtr->column+slavePtr->numCols-1 < column)) {
- continue;
- }
- if (row>=0 && (slavePtr->row > row ||
- slavePtr->row+slavePtr->numRows-1 < row)) {
- continue;
- }
- Tcl_AppendElement(interp, Tk_PathName(slavePtr->tkwin));
- }
-
- /*
- * Sample argument combinations:
- * grid columnconfigure <master> <index> -option
- * grid columnconfigure <master> <index> -option value -option value
- * grid rowconfigure <master> <index>
- * grid rowconfigure <master> <index> -option
- * grid rowconfigure <master> <index> -option value -option value.
- */
-
- } else if(((c == 'c') && (strncmp(argv[1], "columnconfigure", length) == 0)
- && (length >= 3)) ||
- ((c == 'r') && (strncmp(argv[1], "rowconfigure", length) == 0)
- && (length >=2))) {
- Tk_Window master;
- SlotInfo *slotPtr = NULL;
- int slot; /* the column or row number */
- size_t length; /* the # of chars in the "-option" string */
- int slotType; /* COLUMN or ROW */
- int size; /* the configuration value */
- int checkOnly; /* check the size only */
- int argcPtr; /* Number of items in index list */
- char **argvPtr; /* array of indeces */
- char **indexP; /* String value of current index list item. */
- int ok; /* temporary TCL result code */
- int i;
-
- if (((argc%2 != 0) && (argc>6)) || (argc < 4)) {
- Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
- " ", argv[1], " master index ?-option value...?\"",
- (char *)NULL);
- return TCL_ERROR;
- }
-
- master = Tk_NameToWindow(interp, argv[2], tkwin);
- if (master == NULL) {
- return TCL_ERROR;
- }
-
- if (Tcl_SplitList(interp, argv[3], &argcPtr, &argvPtr) != TCL_OK) {
- return TCL_ERROR;
- }
-
- checkOnly = ((argc == 4) || (argc == 5));
- masterPtr = GetGrid(master);
- slotType = (c == 'c') ? COLUMN : ROW;
- if (checkOnly && argcPtr > 1) {
- Tcl_AppendResult(interp, argv[3],
- " must be a single element.", (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- }
- for (indexP=argvPtr; *indexP != NULL; indexP++) {
- if (Tcl_GetInt(interp, *indexP, &slot) != TCL_OK) {
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- }
- ok = CheckSlotData(masterPtr, slot, slotType, checkOnly);
- if ((ok!=TCL_OK) && ((argc<4) || (argc>5))) {
- Tcl_AppendResult(interp, argv[0],
- " ", argv[1], ": \"", *argvPtr,"\" is out of range",
- (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else if (ok == TCL_OK) {
- slotPtr = (slotType == COLUMN) ?
- masterPtr->masterDataPtr->columnPtr :
- masterPtr->masterDataPtr->rowPtr;
- }
-
- /*
- * Return all of the options for this row or column. If the
- * request is out of range, return all 0's.
- */
-
- if (argc == 4) {
- Tcl_Free((char *)argvPtr);
- }
- if ((argc == 4) && (ok == TCL_OK)) {
- sprintf(interp->result,"-minsize %d -pad %d -weight %d",
- slotPtr[slot].minSize,slotPtr[slot].pad,
- slotPtr[slot].weight);
- return (TCL_OK);
- } else if (argc == 4) {
- sprintf(interp->result,"-minsize %d -pad %d -weight %d", 0,0,0);
- return (TCL_OK);
- }
-
- /*
- * Loop through each option value pair, setting the values as required.
- * If only one option is given, with no value, the current value is
- * returned.
- */
-
- for (i=4; i<argc; i+=2) {
- length = strlen(argv[i]);
- if ((*argv[i] != '-') || length < 2) {
- Tcl_AppendResult(interp, "invalid arg \"",
- argv[i], "\" :expecting -minsize, -pad, or -weight.",
- (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- }
- if (strncmp(argv[i], "-minsize", length) == 0) {
- if (argc == 5) {
- int value = ok == TCL_OK ? slotPtr[slot].minSize : 0;
- sprintf(interp->result,"%d",value);
- } else if (Tk_GetPixels(interp, master, argv[i+1], &size)
- != TCL_OK) {
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else {
- slotPtr[slot].minSize = size;
- }
- }
- else if (strncmp(argv[i], "-weight", length) == 0) {
- int wt;
- if (argc == 5) {
- int value = ok == TCL_OK ? slotPtr[slot].weight : 0;
- sprintf(interp->result,"%d",value);
- } else if (Tcl_GetInt(interp, argv[i+1], &wt) != TCL_OK) {
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else if (wt < 0) {
- Tcl_AppendResult(interp, "invalid arg \"", argv[i],
- "\": should be non-negative", (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else {
- slotPtr[slot].weight = wt;
- }
- }
- else if (strncmp(argv[i], "-pad", length) == 0) {
- if (argc == 5) {
- int value = ok == TCL_OK ? slotPtr[slot].pad : 0;
- sprintf(interp->result,"%d",value);
- } else if (Tk_GetPixels(interp, master, argv[i+1], &size)
- != TCL_OK) {
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else if (size < 0) {
- Tcl_AppendResult(interp, "invalid arg \"", argv[i],
- "\": should be non-negative", (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- } else {
- slotPtr[slot].pad = size;
- }
- } else {
- Tcl_AppendResult(interp, "invalid arg \"",
- argv[i], "\": expecting -minsize, -pad, or -weight.",
- (char *) NULL);
- Tcl_Free((char *)argvPtr);
- return TCL_ERROR;
- }
- }
- }
- Tcl_Free((char *)argvPtr);
-
- /*
- * If we changed a property, re-arrange the table,
- * and check for constraint shrinkage.
- */
-
- if (argc != 5) {
- if (slotType == ROW) {
- int last = masterPtr->masterDataPtr->rowMax - 1;
- while ((last >= 0) && (slotPtr[last].weight == 0)
- && (slotPtr[last].pad == 0)
- && (slotPtr[last].minSize == 0)) {
- last--;
- }
- masterPtr->masterDataPtr->rowMax = last+1;
- } else {
- int last = masterPtr->masterDataPtr->columnMax - 1;
- while ((last >= 0) && (slotPtr[last].weight == 0)
- && (slotPtr[last].pad == 0)
- && (slotPtr[last].minSize == 0)) {
- last--;
- }
- masterPtr->masterDataPtr->columnMax = last + 1;
- }
-
- if (masterPtr->abortPtr != NULL) {
- *masterPtr->abortPtr = 1;
- }
- if (!(masterPtr->flags & REQUESTED_RELAYOUT)) {
- masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) masterPtr);
- }
- }
- } else {
- Tcl_AppendResult(interp, "bad option \"", argv[1],
- "\": must be bbox, columnconfigure, configure, forget, info, ",
- "location, propagate, remove, rowconfigure, size, or slaves.",
- (char *) NULL);
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *--------------------------------------------------------------
- *
- * GridReqProc --
- *
- * This procedure is invoked by Tk_GeometryRequest for
- * windows managed by the grid.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Arranges for tkwin, and all its managed siblings, to
- * be re-arranged at the next idle point.
- *
- *--------------------------------------------------------------
- */
-
- static void
- GridReqProc(clientData, tkwin)
- ClientData clientData; /* Grid's information about
- * window that got new preferred
- * geometry. */
- Tk_Window tkwin; /* Other Tk-related information
- * about the window. */
- {
- register Gridder *gridPtr = (Gridder *) clientData;
-
- gridPtr = gridPtr->masterPtr;
- if (!(gridPtr->flags & REQUESTED_RELAYOUT)) {
- gridPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) gridPtr);
- }
- }
-
- /*
- *--------------------------------------------------------------
- *
- * GridLostSlaveProc --
- *
- * This procedure is invoked by Tk whenever some other geometry
- * claims control over a slave that used to be managed by us.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Forgets all grid-related information about the slave.
- *
- *--------------------------------------------------------------
- */
-
- static void
- GridLostSlaveProc(clientData, tkwin)
- ClientData clientData; /* Grid structure for slave window that
- * was stolen away. */
- Tk_Window tkwin; /* Tk's handle for the slave window. */
- {
- register Gridder *slavePtr = (Gridder *) clientData;
-
- if (slavePtr->masterPtr->tkwin != Tk_Parent(slavePtr->tkwin)) {
- Tk_UnmaintainGeometry(slavePtr->tkwin, slavePtr->masterPtr->tkwin);
- }
- Unlink(slavePtr);
- Tk_UnmapWindow(slavePtr->tkwin);
- }
-
- /*
- *--------------------------------------------------------------
- *
- * AdjustOffsets --
- *
- * This procedure adjusts the size of the layout to fit in the
- * space provided. If it needs more space, the extra is added
- * according to the weights. If it needs less, the space is removed
- * according to the weights, but at no time does the size drop below
- * the minsize specified for that slot.
- *
- * Results:
- * The initial offset of the layout,
- * if all the weights are zero, else 0.
- *
- * Side effects:
- * The slot offsets are modified to shrink the layout.
- *
- *--------------------------------------------------------------
- */
-
- static int
- AdjustOffsets(size, slots, slotPtr)
- int size; /* The total layout size (in pixels). */
- int slots; /* Number of slots. */
- register SlotInfo *slotPtr; /* Pointer to slot array. */
- {
- register int slot; /* Current slot. */
- int diff; /* Extra pixels needed to add to the layout. */
- int totalWeight = 0; /* Sum of the weights for all the slots. */
- int weight = 0; /* Sum of the weights so far. */
- int minSize = 0; /* Minimum possible layout size. */
- int newDiff; /* The most pixels that can be added on
- * the current pass. */
-
- diff = size - slotPtr[slots-1].offset;
-
- /*
- * The layout is already the correct size; all done.
- */
-
- if (diff == 0) {
- return(0);
- }
-
- /*
- * If all the weights are zero, center the layout in its parent if
- * there is extra space, else clip on the bottom/right.
- */
-
- for (slot=0; slot < slots; slot++) {
- totalWeight += slotPtr[slot].weight;
- }
-
- if (totalWeight == 0 ) {
- return(diff > 0 ? diff/2 : 0);
- }
-
- /*
- * Add extra space according to the slot weights. This is done
- * cumulatively to prevent round-off error accumulation.
- */
-
- if (diff > 0) {
- for (weight=slot=0; slot < slots; slot++) {
- weight += slotPtr[slot].weight;
- slotPtr[slot].offset += diff * weight / totalWeight;
- }
- return(0);
- }
-
- /*
- * The layout must shrink below its requested size. Compute the
- * minimum possible size by looking at the slot minSizes.
- */
-
- for (slot=0; slot < slots; slot++) {
- if (slotPtr[slot].weight > 0) {
- minSize += slotPtr[slot].minSize;
- } else if (slot > 0) {
- minSize += slotPtr[slot].offset - slotPtr[slot-1].offset;
- } else {
- minSize += slotPtr[slot].offset;
- }
- }
-
- /*
- * If the requested size is less than the minimum required size,
- * set the slot sizes to their minimum values, then clip on the
- * bottom/right.
- */
-
- if (size <= minSize) {
- int offset = 0;
- for (slot=0; slot < slots; slot++) {
- if (slotPtr[slot].weight > 0) {
- offset += slotPtr[slot].minSize;
- } else if (slot > 0) {
- offset += slotPtr[slot].offset - slotPtr[slot-1].offset;
- } else {
- offset += slotPtr[slot].offset;
- }
- slotPtr[slot].offset = offset;
- }
- return(0);
- }
-
- /*
- * Remove space from slots according to their weights. The weights
- * get renormalized anytime a slot shrinks to its minimum size.
- */
-
- while (diff < 0) {
-
- /*
- * Find the total weight for the shrinkable slots.
- */
-
- for (totalWeight=slot=0; slot < slots; slot++) {
- int current = (slot == 0) ? slotPtr[slot].offset :
- slotPtr[slot].offset - slotPtr[slot-1].offset;
- if (current > slotPtr[slot].minSize) {
- totalWeight += slotPtr[slot].weight;
- slotPtr[slot].temp = slotPtr[slot].weight;
- } else {
- slotPtr[slot].temp = 0;
- }
- }
- if (totalWeight == 0) {
- break;
- }
-
- /*
- * Find the maximum amount of space we can distribute this pass.
- */
-
- newDiff = diff;
- for (slot = 0; slot < slots; slot++) {
- int current; /* current size of this slot */
- int maxDiff; /* max diff that would cause
- * this slot to equal its minsize */
- if (slotPtr[slot].temp == 0) {
- continue;
- }
- current = (slot == 0) ? slotPtr[slot].offset :
- slotPtr[slot].offset - slotPtr[slot-1].offset;
- maxDiff = totalWeight * (slotPtr[slot].minSize - current)
- / slotPtr[slot].temp;
- if (maxDiff > newDiff) {
- newDiff = maxDiff;
- }
- }
-
- /*
- * Now distribute the space.
- */
-
- for (weight=slot=0; slot < slots; slot++) {
- weight += slotPtr[slot].temp;
- slotPtr[slot].offset += newDiff * weight / totalWeight;
- }
- diff -= newDiff;
- }
- return(0);
- }
-
- /*
- *--------------------------------------------------------------
- *
- * AdjustForSticky --
- *
- * This procedure adjusts the size of a slave in its cavity based
- * on its "sticky" flags.
- *
- * Results:
- * The input x, y, width, and height are changed to represent the
- * desired coordinates of the slave.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
-
- static void
- AdjustForSticky(slavePtr, xPtr, yPtr, widthPtr, heightPtr)
- Gridder *slavePtr; /* Slave window to arrange in its cavity. */
- int *xPtr; /* Pixel location of the left edge of the cavity. */
- int *yPtr; /* Pixel location of the top edge of the cavity. */
- int *widthPtr; /* Width of the cavity (in pixels). */
- int *heightPtr; /* Height of the cavity (in pixels). */
- {
- int diffx=0; /* Cavity width - slave width. */
- int diffy=0; /* Cavity hight - slave height. */
- int sticky = slavePtr->sticky;
-
- *xPtr += slavePtr->padX/2;
- *widthPtr -= slavePtr->padX;
- *yPtr += slavePtr->padY/2;
- *heightPtr -= slavePtr->padY;
-
- if (*widthPtr > (Tk_ReqWidth(slavePtr->tkwin) + slavePtr->iPadX)) {
- diffx = *widthPtr - (Tk_ReqWidth(slavePtr->tkwin) + slavePtr->iPadX);
- *widthPtr = Tk_ReqWidth(slavePtr->tkwin) + slavePtr->iPadX;
- }
-
- if (*heightPtr > (Tk_ReqHeight(slavePtr->tkwin) + slavePtr->iPadY)) {
- diffy = *heightPtr - (Tk_ReqHeight(slavePtr->tkwin) + slavePtr->iPadY);
- *heightPtr = Tk_ReqHeight(slavePtr->tkwin) + slavePtr->iPadY;
- }
-
- if (sticky&STICK_EAST && sticky&STICK_WEST) {
- *widthPtr += diffx;
- }
- if (sticky&STICK_NORTH && sticky&STICK_SOUTH) {
- *heightPtr += diffy;
- }
- if (!(sticky&STICK_WEST)) {
- *xPtr += (sticky&STICK_EAST) ? diffx : diffx/2;
- }
- if (!(sticky&STICK_NORTH)) {
- *yPtr += (sticky&STICK_SOUTH) ? diffy : diffy/2;
- }
- }
-
- /*
- *--------------------------------------------------------------
- *
- * ArrangeGrid --
- *
- * This procedure is invoked (using the Tcl_DoWhenIdle
- * mechanism) to re-layout a set of windows managed by
- * the grid. It is invoked at idle time so that a
- * series of grid requests can be merged into a single
- * layout operation.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The slaves of masterPtr may get resized or moved.
- *
- *--------------------------------------------------------------
- */
-
- static void
- ArrangeGrid(clientData)
- ClientData clientData; /* Structure describing parent whose slaves
- * are to be re-layed out. */
- {
- register Gridder *masterPtr = (Gridder *) clientData;
- register Gridder *slavePtr;
- GridMaster *slotPtr = masterPtr->masterDataPtr;
- int abort;
- int width, height; /* requested size of layout, in pixels */
- int realWidth, realHeight; /* actual size layout should take-up */
-
- masterPtr->flags &= ~REQUESTED_RELAYOUT;
-
- /*
- * If the parent has no slaves anymore, then don't do anything
- * at all: just leave the parent's size as-is. Otherwise there is
- * no way to "relinquish" control over the parent so another geometry
- * manager can take over.
- */
-
- if (masterPtr->slavePtr == NULL) {
- return;
- }
-
- if (masterPtr->masterDataPtr == NULL) {
- return;
- }
-
- /*
- * Abort any nested call to ArrangeGrid for this window, since
- * we'll do everything necessary here, and set up so this call
- * can be aborted if necessary.
- */
-
- if (masterPtr->abortPtr != NULL) {
- *masterPtr->abortPtr = 1;
- }
- masterPtr->abortPtr = &abort;
- abort = 0;
- Tcl_Preserve((ClientData) masterPtr);
-
- /*
- * Call the constraint engine to fill in the row and column offsets.
- */
-
- SetGridSize(masterPtr);
- width = ResolveConstraints(masterPtr, COLUMN, 0);
- height = ResolveConstraints(masterPtr, ROW, 0);
- width += 2*Tk_InternalBorderWidth(masterPtr->tkwin);
- height += 2*Tk_InternalBorderWidth(masterPtr->tkwin);
-
- if (((width != Tk_ReqWidth(masterPtr->tkwin))
- || (height != Tk_ReqHeight(masterPtr->tkwin)))
- && !(masterPtr->flags & DONT_PROPAGATE)) {
- Tk_GeometryRequest(masterPtr->tkwin, width, height);
- if (width>1 && height>1) {
- masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) masterPtr);
- }
- masterPtr->abortPtr = NULL;
- Tcl_Release((ClientData) masterPtr);
- return;
- }
-
- /*
- * If the currently requested layout size doesn't match the parent's
- * window size, then adjust the slot offsets according to the
- * weights. If all of the weights are zero, center the layout in
- * its parent. I haven't decided what to do if the parent is smaller
- * than the requested size.
- */
-
- realWidth = Tk_Width(masterPtr->tkwin) -
- 2*Tk_InternalBorderWidth(masterPtr->tkwin);
- realHeight = Tk_Height(masterPtr->tkwin) -
- 2*Tk_InternalBorderWidth(masterPtr->tkwin);
- slotPtr->startX = AdjustOffsets(realWidth,
- MAX(slotPtr->columnEnd,slotPtr->columnMax), slotPtr->columnPtr);
- slotPtr->startY = AdjustOffsets(realHeight,
- MAX(slotPtr->rowEnd,slotPtr->rowMax), slotPtr->rowPtr);
- slotPtr->startX += Tk_InternalBorderWidth(masterPtr->tkwin);
- slotPtr->startY += Tk_InternalBorderWidth(masterPtr->tkwin);
-
- /*
- * Now adjust the actual size of the slave to its cavity by
- * computing the cavity size, and adjusting the widget according
- * to its stickyness.
- */
-
- for (slavePtr = masterPtr->slavePtr; slavePtr != NULL && !abort;
- slavePtr = slavePtr->nextPtr) {
- int x, y; /* top left coordinate */
- int width, height; /* slot or slave size */
- int col = slavePtr->column;
- int row = slavePtr->row;
-
- x = (col>0) ? slotPtr->columnPtr[col-1].offset : 0;
- y = (row>0) ? slotPtr->rowPtr[row-1].offset : 0;
-
- width = slotPtr->columnPtr[slavePtr->numCols+col-1].offset - x;
- height = slotPtr->rowPtr[slavePtr->numRows+row-1].offset - y;
-
- x += slotPtr->startX;
- y += slotPtr->startY;
-
- AdjustForSticky(slavePtr, &x, &y, &width, &height);
-
- /*
- * Now put the window in the proper spot. (This was taken directly
- * from tkPack.c.) If the slave is a child of the master, then
- * do this here. Otherwise let Tk_MaintainGeometry do the work.
- */
-
- if (masterPtr->tkwin == Tk_Parent(slavePtr->tkwin)) {
- if ((width <= 0) || (height <= 0)) {
- Tk_UnmapWindow(slavePtr->tkwin);
- } else {
- if ((x != Tk_X(slavePtr->tkwin))
- || (y != Tk_Y(slavePtr->tkwin))
- || (width != Tk_Width(slavePtr->tkwin))
- || (height != Tk_Height(slavePtr->tkwin))) {
- Tk_MoveResizeWindow(slavePtr->tkwin, x, y, width, height);
- }
- if (abort) {
- break;
- }
-
- /*
- * Don't map the slave if the master isn't mapped: wait
- * until the master gets mapped later.
- */
-
- if (Tk_IsMapped(masterPtr->tkwin)) {
- Tk_MapWindow(slavePtr->tkwin);
- }
- }
- } else {
- if ((width <= 0) || (height <= 0)) {
- Tk_UnmaintainGeometry(slavePtr->tkwin, masterPtr->tkwin);
- Tk_UnmapWindow(slavePtr->tkwin);
- } else {
- Tk_MaintainGeometry(slavePtr->tkwin, masterPtr->tkwin,
- x, y, width, height);
- }
- }
- }
-
- masterPtr->abortPtr = NULL;
- Tcl_Release((ClientData) masterPtr);
- }
-
- /*
- *--------------------------------------------------------------
- *
- * ResolveConstraints --
- *
- * Resolve all of the column and row boundaries. Most of
- * the calculations are identical for rows and columns, so this procedure
- * is called twice, once for rows, and again for columns.
- *
- * Results:
- * The offset (in pixels) from the left/top edge of this layout is
- * returned.
- *
- * Side effects:
- * The slot offsets are copied into the SlotInfo structure for the
- * geometry master.
- *
- *--------------------------------------------------------------
- */
-
- static int
- ResolveConstraints(masterPtr, slotType, maxOffset)
- Gridder *masterPtr; /* The geometry master for this grid. */
- int slotType; /* Either ROW or COLUMN. */
- int maxOffset; /* The actual maximum size of this layout
- * in pixels, or 0 (not currently used). */
- {
- register SlotInfo *slotPtr; /* Pointer to row/col constraints. */
- register Gridder *slavePtr; /* List of slave windows in this grid. */
- int constraintCount; /* Count of rows or columns that have
- * constraints. */
- int slotCount; /* Last occupied row or column. */
- int gridCount; /* The larger of slotCount and constraintCount.
- */
- GridLayout *layoutPtr; /* Temporary layout structure. */
- int requiredSize; /* The natural size of the grid (pixels).
- * This is the minimum size needed to
- * accomodate all of the slaves at their
- * requested sizes. */
- int offset; /* The pixel offset of the right edge of the
- * current slot from the beginning of the
- * layout. */
- int slot; /* The current slot. */
- int start; /* The first slot of a contiguous set whose
- * constraints are not yet fully resolved. */
- int end; /* The Last slot of a contiguous set whose
- * constraints are not yet fully resolved. */
-
- /*
- * For typical sized tables, we'll use stack space for the layout data
- * to avoid the overhead of a malloc and free for every layout.
- */
-
- GridLayout layoutData[TYPICAL_SIZE + 1];
-
- if (slotType == COLUMN) {
- constraintCount = masterPtr->masterDataPtr->columnMax;
- slotCount = masterPtr->masterDataPtr->columnEnd;
- slotPtr = masterPtr->masterDataPtr->columnPtr;
- } else {
- constraintCount = masterPtr->masterDataPtr->rowMax;
- slotCount = masterPtr->masterDataPtr->rowEnd;
- slotPtr = masterPtr->masterDataPtr->rowPtr;
- }
-
- /*
- * Make sure there is enough memory for the layout.
- */
-
- gridCount = MAX(constraintCount,slotCount);
- if (gridCount >= TYPICAL_SIZE) {
- layoutPtr = (GridLayout *) Tcl_Alloc(sizeof(GridLayout) * (1+gridCount));
- } else {
- layoutPtr = layoutData;
- }
-
- /*
- * Allocate an extra layout slot to represent the left/top edge of
- * the 0th slot to make it easier to calculate slot widths from
- * offsets without special case code.
- * Initialize the "dummy" slot to the left/top of the table.
- * This slot avoids special casing the first slot.
- */
-
- layoutPtr->minOffset = 0;
- layoutPtr->maxOffset = 0;
- layoutPtr++;
-
- /*
- * Step 1.
- * Copy the slot constraints into the layout structure,
- * and initialize the rest of the fields.
- */
-
- for (slot=0; slot < constraintCount; slot++) {
- layoutPtr[slot].minSize = slotPtr[slot].minSize;
- layoutPtr[slot].weight = slotPtr[slot].weight;
- layoutPtr[slot].pad = slotPtr[slot].pad;
- layoutPtr[slot].binNextPtr = NULL;
- }
- for(;slot<gridCount;slot++) {
- layoutPtr[slot].minSize = 0;
- layoutPtr[slot].weight = 0;
- layoutPtr[slot].pad = 0;
- layoutPtr[slot].binNextPtr = NULL;
- }
-
- /*
- * Step 2.
- * Slaves with a span of 1 are used to determine the minimum size of
- * each slot. Slaves whose span is two or more slots don't
- * contribute to the minimum size of each slot directly, but can cause
- * slots to grow if their size exceeds the the sizes of the slots they
- * span.
- *
- * Bin all slaves whose spans are > 1 by their right edges. This
- * allows the computation on minimum and maximum possible layout
- * sizes at each slot boundary, without the need to re-sort the slaves.
- */
-
- switch (slotType) {
- case COLUMN:
- for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
- slavePtr = slavePtr->nextPtr) {
- int rightEdge = slavePtr->column + slavePtr->numCols - 1;
- slavePtr->size = Tk_ReqWidth(slavePtr->tkwin) +
- slavePtr->padX + slavePtr->iPadX + slavePtr->doubleBw;
- if (slavePtr->numCols > 1) {
- slavePtr->binNextPtr = layoutPtr[rightEdge].binNextPtr;
- layoutPtr[rightEdge].binNextPtr = slavePtr;
- } else {
- int size = slavePtr->size + layoutPtr[rightEdge].pad;
- if (size > layoutPtr[rightEdge].minSize) {
- layoutPtr[rightEdge].minSize = size;
- }
- }
- }
- break;
- case ROW:
- for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
- slavePtr = slavePtr->nextPtr) {
- int rightEdge = slavePtr->row + slavePtr->numRows - 1;
- slavePtr->size = Tk_ReqHeight(slavePtr->tkwin) +
- slavePtr->padY + slavePtr->iPadY + slavePtr->doubleBw;
- if (slavePtr->numRows > 1) {
- slavePtr->binNextPtr = layoutPtr[rightEdge].binNextPtr;
- layoutPtr[rightEdge].binNextPtr = slavePtr;
- } else {
- int size = slavePtr->size + layoutPtr[rightEdge].pad;
- if (size > layoutPtr[rightEdge].minSize) {
- layoutPtr[rightEdge].minSize = size;
- }
- }
- }
- break;
- }
-
- /*
- * Step 3.
- * Determine the minimum slot offsets going from left to right
- * that would fit all of the slaves. This determines the minimum
- */
-
- for (offset=slot=0; slot < gridCount; slot++) {
- layoutPtr[slot].minOffset = layoutPtr[slot].minSize + offset;
- for (slavePtr = layoutPtr[slot].binNextPtr; slavePtr != NULL;
- slavePtr = slavePtr->binNextPtr) {
- int span = (slotType == COLUMN) ? slavePtr->numCols : slavePtr->numRows;
- int required = slavePtr->size + layoutPtr[slot - span].minOffset;
- if (required > layoutPtr[slot].minOffset) {
- layoutPtr[slot].minOffset = required;
- }
- }
- offset = layoutPtr[slot].minOffset;
- }
-
- /*
- * At this point, we know the minimum required size of the entire layout.
- * It might be prudent to stop here if our "master" will resize itself
- * to this size.
- */
-
- requiredSize = offset;
- if (maxOffset > offset) {
- offset=maxOffset;
- }
-
- /*
- * Step 4.
- * Determine the minimum slot offsets going from right to left,
- * bounding the pixel range of each slot boundary.
- * Pre-fill all of the right offsets with the actual size of the table;
- * they will be reduced as required.
- */
-
- for (slot=0; slot < gridCount; slot++) {
- layoutPtr[slot].maxOffset = offset;
- }
- for (slot=gridCount-1; slot > 0;) {
- for (slavePtr = layoutPtr[slot].binNextPtr; slavePtr != NULL;
- slavePtr = slavePtr->binNextPtr) {
- int span = (slotType == COLUMN) ? slavePtr->numCols : slavePtr->numRows;
- int require = offset - slavePtr->size;
- int startSlot = slot - span;
- if (startSlot >=0 && require < layoutPtr[startSlot].maxOffset) {
- layoutPtr[startSlot].maxOffset = require;
- }
- }
- offset -= layoutPtr[slot].minSize;
- slot--;
- if (layoutPtr[slot].maxOffset < offset) {
- offset = layoutPtr[slot].maxOffset;
- } else {
- layoutPtr[slot].maxOffset = offset;
- }
- }
-
- /*
- * Step 5.
- * At this point, each slot boundary has a range of values that
- * will satisfy the overall layout size.
- * Make repeated passes over the layout structure looking for
- * spans of slot boundaries where the minOffsets are less than
- * the maxOffsets, and adjust the offsets according to the slot
- * weights. At each pass, at least one slot boundary will have
- * its range of possible values fixed at a single value.
- */
-
- for (start=0; start < gridCount;) {
- int totalWeight = 0; /* Sum of the weights for all of the
- * slots in this span. */
- int need = 0; /* The minimum space needed to layout
- * this span. */
- int have; /* The actual amount of space that will
- * be taken up by this span. */
- int weight; /* Cumulative weights of the columns in
- * this span. */
- int noWeights = 0; /* True if the span has no weights. */
-
- /*
- * Find a span by identifying ranges of slots whose edges are
- * already constrained at fixed offsets, but whose internal
- * slot boundaries have a range of possible positions.
- */
-
- if (layoutPtr[start].minOffset == layoutPtr[start].maxOffset) {
- start++;
- continue;
- }
-
- for (end=start+1; end<gridCount; end++) {
- if (layoutPtr[end].minOffset == layoutPtr[end].maxOffset) {
- break;
- }
- }
-
- /*
- * We found a span. Compute the total weight, minumum space required,
- * for this span, and the actual amount of space the span should
- * use.
- */
-
- for (slot=start; slot<=end; slot++) {
- totalWeight += layoutPtr[slot].weight;
- need += layoutPtr[slot].minSize;
- }
- have = layoutPtr[end].maxOffset - layoutPtr[start-1].minOffset;
-
- /*
- * If all the weights in the span are zero, then distribute the
- * extra space evenly.
- */
-
- if (totalWeight == 0) {
- noWeights++;
- totalWeight = end - start + 1;
- }
-
- /*
- * It might not be possible to give the span all of the space
- * available on this pass without violating the size constraints
- * of one or more of the internal slot boundaries.
- * Determine the maximum amount of space that when added to the
- * entire span, would cause a slot boundary to have its possible
- * range reduced to one value, and reduce the amount of extra
- * space allocated on this pass accordingly.
- *
- * The calculation is done cumulatively to avoid accumulating
- * roundoff errors.
- */
-
- for (weight=0,slot=start; slot<end; slot++) {
- int diff = layoutPtr[slot].maxOffset - layoutPtr[slot].minOffset;
- weight += noWeights ? 1 : layoutPtr[slot].weight;
- if ((noWeights || layoutPtr[slot].weight>0) &&
- (diff*totalWeight/weight) < (have-need)) {
- have = diff * totalWeight / weight + need;
- }
- }
-
- /*
- * Now distribute the extra space among the slots by
- * adjusting the minSizes and minOffsets.
- */
-
- for (weight=0,slot=start; slot<end; slot++) {
- weight += noWeights ? 1 : layoutPtr[slot].weight;
- layoutPtr[slot].minOffset +=
- (int)((double) (have-need) * weight/totalWeight + 0.5);
- layoutPtr[slot].minSize = layoutPtr[slot].minOffset
- - layoutPtr[slot-1].minOffset;
- }
- layoutPtr[slot].minSize = layoutPtr[slot].minOffset
- - layoutPtr[slot-1].minOffset;
-
- /*
- * Having pushed the top/left boundaries of the slots to
- * take up extra space, the bottom/right space is recalculated
- * to propagate the new space allocation.
- */
-
- for (slot=end; slot > start; slot--) {
- layoutPtr[slot-1].maxOffset =
- layoutPtr[slot].maxOffset-layoutPtr[slot].minSize;
- }
- }
-
-
- /*
- * Step 6.
- * All of the space has been apportioned; copy the
- * layout information back into the master.
- */
-
- for (slot=0; slot < gridCount; slot++) {
- slotPtr[slot].offset = layoutPtr[slot].minOffset;
- }
-
- --layoutPtr;
- if (layoutPtr != layoutData) {
- Tcl_Free((char *)layoutPtr);
- }
- return requiredSize;
- }
-
- /*
- *--------------------------------------------------------------
- *
- * GetGrid --
- *
- * This internal procedure is used to locate a Grid
- * structure for a given window, creating one if one
- * doesn't exist already.
- *
- * Results:
- * The return value is a pointer to the Grid structure
- * corresponding to tkwin.
- *
- * Side effects:
- * A new grid structure may be created. If so, then
- * a callback is set up to clean things up when the
- * window is deleted.
- *
- *--------------------------------------------------------------
- */
-
- static Gridder *
- GetGrid(tkwin)
- Tk_Window tkwin; /* Token for window for which
- * grid structure is desired. */
- {
- register Gridder *gridPtr;
- Tcl_HashEntry *hPtr;
- int new;
-
- if (!initialized) {
- initialized = 1;
- Tcl_InitHashTable(&gridHashTable, TCL_ONE_WORD_KEYS);
- }
-
- /*
- * See if there's already grid for this window. If not,
- * then create a new one.
- */
-
- hPtr = Tcl_CreateHashEntry(&gridHashTable, (char *) tkwin, &new);
- if (!new) {
- return (Gridder *) Tcl_GetHashValue(hPtr);
- }
- gridPtr = (Gridder *) Tcl_Alloc(sizeof(Gridder));
- gridPtr->tkwin = tkwin;
- gridPtr->masterPtr = NULL;
- gridPtr->masterDataPtr = NULL;
- gridPtr->nextPtr = NULL;
- gridPtr->slavePtr = NULL;
- gridPtr->binNextPtr = NULL;
-
- gridPtr->column = gridPtr->row = -1;
- gridPtr->numCols = 1;
- gridPtr->numRows = 1;
-
- gridPtr->padX = gridPtr->padY = 0;
- gridPtr->iPadX = gridPtr->iPadY = 0;
- gridPtr->doubleBw = 2*Tk_Changes(tkwin)->border_width;
- gridPtr->abortPtr = NULL;
- gridPtr->flags = 0;
- gridPtr->sticky = 0;
- gridPtr->size = 0;
- gridPtr->masterDataPtr = NULL;
- Tcl_SetHashValue(hPtr, gridPtr);
- Tk_CreateEventHandler(tkwin, StructureNotifyMask,
- GridStructureProc, (ClientData) gridPtr);
- return gridPtr;
- }
-
- /*
- *--------------------------------------------------------------
- *
- * SetGridSize --
- *
- * This internal procedure sets the size of the grid occupied
- * by slaves.
- *
- * Results:
- * none
- *
- * Side effects:
- * The width and height arguments are filled in the master data structure.
- * Additional space is allocated for the constraints to accomodate
- * the offsets.
- *
- *--------------------------------------------------------------
- */
-
- static void
- SetGridSize(masterPtr)
- Gridder *masterPtr; /* The geometry master for this grid. */
- {
- register Gridder *slavePtr; /* Current slave window. */
- int maxX = 0, maxY = 0;
-
- for (slavePtr = masterPtr->slavePtr; slavePtr != NULL;
- slavePtr = slavePtr->nextPtr) {
- maxX = MAX(maxX,slavePtr->numCols + slavePtr->column);
- maxY = MAX(maxY,slavePtr->numRows + slavePtr->row);
- }
- masterPtr->masterDataPtr->columnEnd = maxX;
- masterPtr->masterDataPtr->rowEnd = maxY;
- CheckSlotData(masterPtr, maxX, COLUMN, CHECK_SPACE);
- CheckSlotData(masterPtr, maxY, ROW, CHECK_SPACE);
- }
-
- /*
- *--------------------------------------------------------------
- *
- * CheckSlotData --
- *
- * This internal procedure is used to manage the storage for
- * row and column (slot) constraints.
- *
- * Results:
- * TRUE if the index is OK, False otherwise.
- *
- * Side effects:
- * A new master grid structure may be created. If so, then
- * it is initialized. In addition, additional storage for
- * a row or column constraints may be allocated, and the constraint
- * maximums are adjusted.
- *
- *--------------------------------------------------------------
- */
-
- static int
- CheckSlotData(masterPtr, slot, slotType, checkOnly)
- Gridder *masterPtr; /* the geometry master for this grid */
- int slot; /* which slot to look at */
- int slotType; /* ROW or COLUMN */
- int checkOnly; /* don't allocate new space if true */
- {
- int numSlot; /* number of slots already allocated (Space) */
- int end; /* last used constraint */
-
- /*
- * If slot is out of bounds, return immediately.
- */
-
- if (slot < 0 || slot >= MAX_ELEMENT) {
- return TCL_ERROR;
- }
-
- if ((checkOnly == CHECK_ONLY) && (masterPtr->masterDataPtr == NULL)) {
- return TCL_ERROR;
- }
-
- /*
- * If we need to allocate more space, allocate a little extra to avoid
- * repeated re-alloc's for large tables. We need enough space to
- * hold all of the offsets as well.
- */
-
- InitMasterData(masterPtr);
- end = (slotType == ROW) ? masterPtr->masterDataPtr->rowMax :
- masterPtr->masterDataPtr->columnMax;
- if (checkOnly == CHECK_ONLY) {
- return (end < slot) ? TCL_ERROR : TCL_OK;
- } else {
- numSlot = (slotType == ROW) ? masterPtr->masterDataPtr->rowSpace
- : masterPtr->masterDataPtr->columnSpace;
- if (slot >= numSlot) {
- int newNumSlot = slot + PREALLOC ;
- size_t oldSize = numSlot * sizeof(SlotInfo) ;
- size_t newSize = newNumSlot * sizeof(SlotInfo) ;
- SlotInfo *new = (SlotInfo *) Tcl_Alloc(newSize);
- SlotInfo *old = (slotType == ROW) ?
- masterPtr->masterDataPtr->rowPtr :
- masterPtr->masterDataPtr->columnPtr;
- memcpy((VOID *) new, (VOID *) old, oldSize );
- memset((VOID *) (new+numSlot), 0, newSize - oldSize );
- Tcl_Free((char *) old);
- if (slotType == ROW) {
- masterPtr->masterDataPtr->rowPtr = new ;
- masterPtr->masterDataPtr->rowSpace = newNumSlot ;
- } else {
- masterPtr->masterDataPtr->columnPtr = new;
- masterPtr->masterDataPtr->columnSpace = newNumSlot ;
- }
- }
- if (slot >= end && checkOnly != CHECK_SPACE) {
- if (slotType == ROW) {
- masterPtr->masterDataPtr->rowMax = slot+1;
- } else {
- masterPtr->masterDataPtr->columnMax = slot+1;
- }
- }
- return TCL_OK;
- }
- }
-
- /*
- *--------------------------------------------------------------
- *
- * InitMasterData --
- *
- * This internal procedure is used to allocate and initialize
- * the data for a geometry master, if the data
- * doesn't exist already.
- *
- * Results:
- * none
- *
- * Side effects:
- * A new master grid structure may be created. If so, then
- * it is initialized.
- *
- *--------------------------------------------------------------
- */
-
- static void
- InitMasterData(masterPtr)
- Gridder *masterPtr;
- {
- size_t size;
- if (masterPtr->masterDataPtr == NULL) {
- GridMaster *gridPtr = masterPtr->masterDataPtr =
- (GridMaster *) Tcl_Alloc(sizeof(GridMaster));
- size = sizeof(SlotInfo) * TYPICAL_SIZE;
-
- gridPtr->columnEnd = 0;
- gridPtr->columnMax = 0;
- gridPtr->columnPtr = (SlotInfo *) Tcl_Alloc(size);
- gridPtr->columnSpace = 0;
- gridPtr->columnSpace = TYPICAL_SIZE;
- gridPtr->rowEnd = 0;
- gridPtr->rowMax = 0;
- gridPtr->rowPtr = (SlotInfo *) Tcl_Alloc(size);
- gridPtr->rowSpace = 0;
- gridPtr->rowSpace = TYPICAL_SIZE;
-
- memset((VOID *) gridPtr->columnPtr, 0, size);
- memset((VOID *) gridPtr->rowPtr, 0, size);
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * Unlink --
- *
- * Remove a grid from its parent's list of slaves.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The parent will be scheduled for re-arranging, and the size of the
- * grid will be adjusted accordingly
- *
- *----------------------------------------------------------------------
- */
-
- static void
- Unlink(slavePtr)
- register Gridder *slavePtr; /* Window to unlink. */
- {
- register Gridder *masterPtr, *slavePtr2;
- GridMaster *gridPtr; /* pointer to grid data */
-
- masterPtr = slavePtr->masterPtr;
- if (masterPtr == NULL) {
- return;
- }
-
- gridPtr = masterPtr->masterDataPtr;
- if (masterPtr->slavePtr == slavePtr) {
- masterPtr->slavePtr = slavePtr->nextPtr;
- }
- else {
- for (slavePtr2 = masterPtr->slavePtr; ; slavePtr2 = slavePtr2->nextPtr) {
- if (slavePtr2 == NULL) {
- panic("Unlink couldn't find previous window");
- }
- if (slavePtr2->nextPtr == slavePtr) {
- slavePtr2->nextPtr = slavePtr->nextPtr;
- break;
- }
- }
- }
- if (!(masterPtr->flags & REQUESTED_RELAYOUT)) {
- masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) masterPtr);
- }
- if (masterPtr->abortPtr != NULL) {
- *masterPtr->abortPtr = 1;
- }
-
- if ((slavePtr->numCols+slavePtr->column == gridPtr->columnMax)
- || (slavePtr->numRows+slavePtr->row == gridPtr->rowMax)) {
- }
- slavePtr->masterPtr = NULL;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * DestroyGrid --
- *
- * This procedure is invoked by Tk_EventuallyFree or Tcl_Release
- * to clean up the internal structure of a grid at a safe time
- * (when no-one is using it anymore). Cleaning up the grid involves
- * freeing the main structure for all windows. and the master structure
- * for geometry managers.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the grid is freed up.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- DestroyGrid(memPtr)
- char *memPtr; /* Info about window that is now dead. */
- {
- register Gridder *gridPtr = (Gridder *) memPtr;
-
- if (gridPtr->masterDataPtr != NULL) {
- if (gridPtr->masterDataPtr->rowPtr != NULL) {
- Tcl_Free((char *) gridPtr->masterDataPtr -> rowPtr);
- }
- if (gridPtr->masterDataPtr->columnPtr != NULL) {
- Tcl_Free((char *) gridPtr->masterDataPtr -> columnPtr);
- }
- Tcl_Free((char *) gridPtr->masterDataPtr);
- }
- Tcl_Free((char *) gridPtr);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GridStructureProc --
- *
- * This procedure is invoked by the Tk event dispatcher in response
- * to StructureNotify events.
- *
- * Results:
- * None.
- *
- * Side effects:
- * If a window was just deleted, clean up all its grid-related
- * information. If it was just resized, re-configure its slaves, if
- * any.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- GridStructureProc(clientData, eventPtr)
- ClientData clientData; /* Our information about window
- * referred to by eventPtr. */
- XEvent *eventPtr; /* Describes what just happened. */
- {
- register Gridder *gridPtr = (Gridder *) clientData;
-
- if (eventPtr->type == ConfigureNotify) {
- if (!(gridPtr->flags & REQUESTED_RELAYOUT)) {
- gridPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) gridPtr);
- }
- if (gridPtr->doubleBw != 2*Tk_Changes(gridPtr->tkwin)->border_width) {
- if ((gridPtr->masterPtr != NULL) &&
- !(gridPtr->masterPtr->flags & REQUESTED_RELAYOUT)) {
- gridPtr->doubleBw = 2*Tk_Changes(gridPtr->tkwin)->border_width;
- gridPtr->masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) gridPtr->masterPtr);
- }
- }
- } else if (eventPtr->type == DestroyNotify) {
- register Gridder *gridPtr2, *nextPtr;
-
- if (gridPtr->masterPtr != NULL) {
- Unlink(gridPtr);
- }
- for (gridPtr2 = gridPtr->slavePtr; gridPtr2 != NULL;
- gridPtr2 = nextPtr) {
- Tk_UnmapWindow(gridPtr2->tkwin);
- gridPtr2->masterPtr = NULL;
- nextPtr = gridPtr2->nextPtr;
- gridPtr2->nextPtr = NULL;
- }
- Tcl_DeleteHashEntry(Tcl_FindHashEntry(&gridHashTable,
- (char *) gridPtr->tkwin));
- if (gridPtr->flags & REQUESTED_RELAYOUT) {
- Tk_CancelIdleCall(ArrangeGrid, (ClientData) gridPtr);
- }
- gridPtr->tkwin = NULL;
- Tk_EventuallyFree((ClientData) gridPtr, DestroyGrid);
- } else if (eventPtr->type == MapNotify) {
- if (!(gridPtr->flags & REQUESTED_RELAYOUT)) {
- gridPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) gridPtr);
- }
- } else if (eventPtr->type == UnmapNotify) {
- register Gridder *gridPtr2;
-
- for (gridPtr2 = gridPtr->slavePtr; gridPtr2 != NULL;
- gridPtr2 = gridPtr2->nextPtr) {
- Tk_UnmapWindow(gridPtr2->tkwin);
- }
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureSlaves --
- *
- * This implements the guts of the "grid configure" command. Given
- * a list of slaves and configuration options, it arranges for the
- * grid to manage the slaves and sets the specified options.
- * arguments consist of windows or window shortcuts followed by
- * "-option value" pairs.
- *
- * Results:
- * TCL_OK is returned if all went well. Otherwise, TCL_ERROR is
- * returned and interp->result is set to contain an error message.
- *
- * Side effects:
- * Slave windows get taken over by the grid.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- ConfigureSlaves(interp, tkwin, argc, argv)
- Tcl_Interp *interp; /* Interpreter for error reporting. */
- Tk_Window tkwin; /* Any window in application containing
- * slaves. Used to look up slave names. */
- int argc; /* Number of elements in argv. */
- char *argv[]; /* Argument strings: contains one or more
- * window names followed by any number
- * of "option value" pairs. Caller must
- * make sure that there is at least one
- * window name. */
- {
- Gridder *masterPtr;
- Gridder *slavePtr;
- Tk_Window other, slave, parent, ancestor;
- int i, j, c, tmp;
- size_t length;
- int numWindows;
- int width;
- int defaultColumn = 0; /* default column number */
- int defaultColumnSpan = 1; /* default number of columns */
- char *lastWindow; /* use this window to base current
- * Row/col on */
-
- /*
- * Count the number of windows, or window short-cuts.
- */
-
- for(numWindows=i=0;i<argc;i++) {
- char firstChar = *argv[i];
- if (firstChar == '.') {
- numWindows++;
- continue;
- }
- length = strlen(argv[i]);
- if (length > 1 && firstChar == '-') {
- break;
- }
- if (length > 1) {
- Tcl_AppendResult(interp, "unexpected parameter, \"",
- argv[i], "\", in configure list. ",
- "Should be window name or option", (char *) NULL);
- return TCL_ERROR;
- }
-
- if ((firstChar == REL_HORIZ) && ((numWindows == 0) ||
- (*argv[i-1] == REL_SKIP) || (*argv[i-1] == REL_VERT))) {
- Tcl_AppendResult(interp,
- "Must specify window before shortcut '-'.",
- (char *) NULL);
- return TCL_ERROR;
- }
-
- if ((firstChar == REL_VERT) || (firstChar == REL_SKIP)
- || (firstChar == REL_HORIZ)) {
- continue;
- }
-
- Tcl_AppendResult(interp, "invalid window shortcut, \"",
- argv[i], "\" should be '-', 'x', or '^'", (char *) NULL);
- return TCL_ERROR;
- }
- numWindows = i;
-
- if ((argc-numWindows)&1) {
- Tcl_AppendResult(interp, "extra option or",
- " option with no value", (char *) NULL);
- return TCL_ERROR;
- }
-
- /*
- * Iterate over all of the slave windows and short-cuts, parsing
- * options for each slave. It's a bit wasteful to re-parse the
- * options for each slave, but things get too messy if we try to
- * parse the arguments just once at the beginning. For example,
- * if a slave already is managed we want to just change a few
- * existing values without resetting everything. If there are
- * multiple windows, the -in option only gets processed for the
- * first window.
- */
-
- masterPtr = NULL;
- for (j = 0; j < numWindows; j++) {
- char firstChar = *argv[j];
-
- /*
- * '^' and 'x' cause us to skip a column. '-' is processed
- * as part of its preceeding slave.
- */
-
- if ((firstChar == REL_VERT) || (firstChar == REL_SKIP)) {
- defaultColumn++;
- continue;
- }
- if (firstChar == REL_HORIZ) {
- continue;
- }
-
- for (defaultColumnSpan=1;
- j + defaultColumnSpan < numWindows &&
- (*argv[j+defaultColumnSpan] == REL_HORIZ);
- defaultColumnSpan++) {
- /* null body */
- }
-
- slave = Tk_NameToWindow(interp, argv[j], tkwin);
- if (slave == NULL) {
- return TCL_ERROR;
- }
- if (Tk_IsTopLevel(slave)) {
- Tcl_AppendResult(interp, "can't manage \"", argv[j],
- "\": it's a top-level window", (char *) NULL);
- return TCL_ERROR;
- }
- slavePtr = GetGrid(slave);
-
- /*
- * The following statement is taken from tkPack.c:
- *
- * "If the slave isn't currently managed, reset all of its
- * configuration information to default values (there could
- * be old values left from a previous packer)."
- *
- * I [D.S.] disagree with this statement. If a slave is disabled (using
- * "forget") and then re-enabled, I submit that 90% of the time the
- * programmer will want it to retain its old configuration information.
- * If the programmer doesn't want this behavior, then the
- * defaults can be reestablished by hand, without having to worry
- * about keeping track of the old state.
- */
-
- for (i = numWindows; i < argc; i+=2) {
- length = strlen(argv[i]);
- c = argv[i][1];
-
- if (length < 2) {
- Tcl_AppendResult(interp, "unknown or ambiguous option \"",
- argv[i], "\": must be ",
- "-column, -columnspan, -in, -ipadx, -ipady, ",
- "-padx, -pady, -row, -rowspan, or -sticky",
- (char *) NULL);
- return TCL_ERROR;
- }
- if ((c == 'c') && (strncmp(argv[i], "-column", length) == 0)) {
- if (Tcl_GetInt(interp, argv[i+1], &tmp) != TCL_OK || tmp<0) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad column value \"", argv[i+1],
- "\": must be a non-negative integer", (char *)NULL);
- return TCL_ERROR;
- }
- slavePtr->column = tmp;
- } else if ((c == 'c')
- && (strncmp(argv[i], "-columnspan", length) == 0)) {
- if (Tcl_GetInt(interp, argv[i+1], &tmp) != TCL_OK || tmp <= 0) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad columnspan value \"", argv[i+1],
- "\": must be a positive integer", (char *)NULL);
- return TCL_ERROR;
- }
- slavePtr->numCols = tmp;
- } else if ((c == 'i') && (strncmp(argv[i], "-in", length) == 0)) {
- other = Tk_NameToWindow(interp, argv[i+1], tkwin);
- if (other == NULL) {
- return TCL_ERROR;
- }
- if (other == slave) {
- sprintf(interp->result,"Window can't be managed in itself");
- return TCL_ERROR;
- }
- masterPtr = GetGrid(other);
- InitMasterData(masterPtr);
- } else if ((c == 'i')
- && (strncmp(argv[i], "-ipadx", length) == 0)) {
- if ((Tk_GetPixels(interp, slave, argv[i+1], &tmp) != TCL_OK)
- || (tmp < 0)) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad ipadx value \"", argv[i+1],
- "\": must be positive screen distance",
- (char *) NULL);
- return TCL_ERROR;
- }
- slavePtr->iPadX = tmp*2;
- } else if ((c == 'i')
- && (strncmp(argv[i], "-ipady", length) == 0)) {
- if ((Tk_GetPixels(interp, slave, argv[i+1], &tmp) != TCL_OK)
- || (tmp< 0)) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad ipady value \"", argv[i+1],
- "\": must be positive screen distance",
- (char *) NULL);
- return TCL_ERROR;
- }
- slavePtr->iPadY = tmp*2;
- } else if ((c == 'p')
- && (strncmp(argv[i], "-padx", length) == 0)) {
- if ((Tk_GetPixels(interp, slave, argv[i+1], &tmp) != TCL_OK)
- || (tmp< 0)) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad padx value \"", argv[i+1],
- "\": must be positive screen distance",
- (char *) NULL);
- return TCL_ERROR;
- }
- slavePtr->padX = tmp*2;
- } else if ((c == 'p')
- && (strncmp(argv[i], "-pady", length) == 0)) {
- if ((Tk_GetPixels(interp, slave, argv[i+1], &tmp) != TCL_OK)
- || (tmp< 0)) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad pady value \"", argv[i+1],
- "\": must be positive screen distance",
- (char *) NULL);
- return TCL_ERROR;
- }
- slavePtr->padY = tmp*2;
- } else if ((c == 'r') && (strncmp(argv[i], "-row", length) == 0)) {
- if (Tcl_GetInt(interp, argv[i+1], &tmp) != TCL_OK || tmp<0) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad grid value \"", argv[i+1],
- "\": must be a non-negative integer", (char *)NULL);
- return TCL_ERROR;
- }
- slavePtr->row = tmp;
- } else if ((c == 'r')
- && (strncmp(argv[i], "-rowspan", length) == 0)) {
- if ((Tcl_GetInt(interp, argv[i+1], &tmp) != TCL_OK) || tmp<=0) {
- Tcl_ResetResult(interp);
- Tcl_AppendResult(interp, "bad rowspan value \"", argv[i+1],
- "\": must be a positive integer", (char *)NULL);
- return TCL_ERROR;
- }
- slavePtr->numRows = tmp;
- } else if ((c == 's')
- && strncmp(argv[i], "-sticky", length) == 0) {
- int sticky = StringToSticky(argv[i+1]);
- if (sticky == -1) {
- Tcl_AppendResult(interp, "bad stickyness value \"", argv[i+1],
- "\": must be a string containing n, e, s, and/or w",
- (char *)NULL);
- return TCL_ERROR;
- }
- slavePtr->sticky = sticky;
- } else {
- Tcl_AppendResult(interp, "unknown or ambiguous option \"",
- argv[i], "\": must be ",
- "-column, -columnspan, -in, -ipadx, -ipady, ",
- "-padx, -pady, -row, -rowspan, or -sticky",
- (char *) NULL);
- return TCL_ERROR;
- }
- }
-
- /*
- * Make sure we have a geometry master. We look at:
- * 1) the -in flag
- * 2) the geometry master of the first slave (if specified)
- * 3) the parent of the first slave.
- */
-
- if (masterPtr == NULL) {
- masterPtr = slavePtr->masterPtr;
- }
- parent = Tk_Parent(slave);
- if (masterPtr == NULL) {
- masterPtr = GetGrid(parent);
- InitMasterData(masterPtr);
- }
-
- if (slavePtr->masterPtr != NULL && slavePtr->masterPtr != masterPtr) {
- Unlink(slavePtr);
- slavePtr->masterPtr = NULL;
- }
-
- if (slavePtr->masterPtr == NULL) {
- Gridder *tempPtr = masterPtr->slavePtr;
- slavePtr->masterPtr = masterPtr;
- masterPtr->slavePtr = slavePtr;
- slavePtr->nextPtr = tempPtr;
- }
-
- /*
- * Make sure that the slave's parent is either the master or
- * an ancestor of the master, and that the master and slave
- * aren't the same.
- */
-
- for (ancestor = masterPtr->tkwin; ; ancestor = Tk_Parent(ancestor)) {
- if (ancestor == parent) {
- break;
- }
- if (Tk_IsTopLevel(ancestor)) {
- Tcl_AppendResult(interp, "can't put ", argv[j],
- " inside ", Tk_PathName(masterPtr->tkwin),
- (char *) NULL);
- Unlink(slavePtr);
- return TCL_ERROR;
- }
- }
-
- /*
- * Try to make sure our master isn't managed by us.
- */
-
- if (masterPtr->masterPtr == slavePtr) {
- Tcl_AppendResult(interp, "can't put ", argv[j],
- " inside ", Tk_PathName(masterPtr->tkwin),
- ", would cause management loop.",
- (char *) NULL);
- Unlink(slavePtr);
- return TCL_ERROR;
- }
-
- Tk_ManageGeometry(slave, &gridMgrType, (ClientData) slavePtr);
-
- /*
- * Assign default position information.
- */
-
- if (slavePtr->column == -1) {
- slavePtr->column = defaultColumn;
- }
- slavePtr->numCols += defaultColumnSpan - 1;
- if (slavePtr->row == -1) {
- if (masterPtr->masterDataPtr == NULL) {
- slavePtr->row = 0;
- } else {
- slavePtr->row = masterPtr->masterDataPtr->rowEnd;
- }
- }
- defaultColumn += slavePtr->numCols;
- defaultColumnSpan = 1;
-
- /*
- * Arrange for the parent to be re-arranged at the first
- * idle moment.
- */
-
- if (masterPtr->abortPtr != NULL) {
- *masterPtr->abortPtr = 1;
- }
- if (!(masterPtr->flags & REQUESTED_RELAYOUT)) {
- masterPtr->flags |= REQUESTED_RELAYOUT;
- Tcl_DoWhenIdle(ArrangeGrid, (ClientData) masterPtr);
- }
- }
-
- /* Now look for all the "^"'s. */
-
- lastWindow = NULL;
- for (j = 0; j < numWindows; j++) {
- struct Gridder *otherPtr;
- int match; /* found a match for the ^ */
- int lastRow, lastColumn; /* implied end of table */
-
- if (*argv[j] == '.') {
- lastWindow = argv[j];
- }
- if (*argv[j] != REL_VERT) {
- continue;
- }
-
- if (masterPtr == NULL) {
- Tcl_AppendResult(interp, "can't use '^', cant find master",
- (char *) NULL);
- return TCL_ERROR;
- }
-
- for (width=1; width+j < numWindows && *argv[j+width] == REL_VERT;
- width++) {
- /* Null Body */
- }
-
- /*
- * Find the implied grid location of the ^
- */
-
- if (lastWindow == NULL) {
- if (masterPtr->masterDataPtr != NULL) {
- SetGridSize(masterPtr);
- lastRow = masterPtr->masterDataPtr->rowEnd - 1;
- } else {
- lastRow = 0;
- }
- lastColumn = 0;
- } else {
- other = Tk_NameToWindow(interp, lastWindow, tkwin);
- otherPtr = GetGrid(other);
- lastRow = otherPtr->row;
- lastColumn = otherPtr->column + otherPtr->numCols;
- }
-
- for (match=0, slavePtr = masterPtr->slavePtr; slavePtr != NULL;
- slavePtr = slavePtr->nextPtr) {
-
- if (slavePtr->numCols == width
- && slavePtr->column == lastColumn
- && slavePtr->row + slavePtr->numRows == lastRow) {
- slavePtr->numRows++;
- match++;
- }
- lastWindow = Tk_PathName(slavePtr->tkwin);
- }
- if (!match) {
- Tcl_AppendResult(interp, "can't find slave to extend with \"^\".",
- (char *) NULL);
- return TCL_ERROR;
- }
- j += width - 1;
- }
-
- if (masterPtr == NULL) {
- Tcl_AppendResult(interp, "can't determine master window",
- (char *) NULL);
- return TCL_ERROR;
- }
- SetGridSize(masterPtr);
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * StickyToString
- *
- * Converts the internal boolean combination of "sticky" bits onto
- * a TCL list element containing zero or mor of n, s, e, or w.
- *
- * Results:
- * A string is placed into the "result" pointer.
- *
- * Side effects:
- * none.
- *
- *----------------------------------------------------------------------
- */
-
- static void
- StickyToString(flags, result)
- int flags; /* the sticky flags */
- char *result; /* where to put the result */
- {
- int count = 0;
- if (flags&STICK_NORTH) {
- result[count++] = 'n';
- }
- if (flags&STICK_EAST) {
- result[count++] = 'e';
- }
- if (flags&STICK_SOUTH) {
- result[count++] = 's';
- }
- if (flags&STICK_WEST) {
- result[count++] = 'w';
- }
- if (count) {
- result[count] = '\0';
- } else {
- sprintf(result,"{}");
- }
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * StringToSticky --
- *
- * Converts an ascii string representing a widgets stickyness
- * into the boolean result.
- *
- * Results:
- * The boolean combination of the "sticky" bits is retuned. If an
- * error occurs, such as an invalid character, -1 is returned instead.
- *
- * Side effects:
- * none
- *
- *----------------------------------------------------------------------
- */
-
- static int
- StringToSticky(string)
- char *string;
- {
- int sticky = 0;
- char c;
-
- while ((c = *string++) != '\0') {
- switch (c) {
- case 'n': case 'N': sticky |= STICK_NORTH; break;
- case 'e': case 'E': sticky |= STICK_EAST; break;
- case 's': case 'S': sticky |= STICK_SOUTH; break;
- case 'w': case 'W': sticky |= STICK_WEST; break;
- case ' ': case ',': case '\t': case '\r': case '\n': break;
- default: return -1;
- }
- }
- return sticky;
- }
-